The Experts below are selected from a list of 219 Experts worldwide ranked by ideXlab platform
Inke Sunila - One of the best experts on this subject based on the ideXlab platform.
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Serum-cell interactions in transmission of sarcoma in the soft shell clam, Mya arenaria L.
Comparative biochemistry and physiology. Comparative physiology, 1992Co-Authors: Inke SunilaAbstract:Abstract 1. 1. Serum proteins from sarcornatous soft shell clams, Mya arenaria L., enhanced transmission of sarcoma. 2. 2. Sarcoma cells were isolated and administered to the recipients at the same cell density in different sarcoma-protein-free diluents: seawater, serum from normal clams, heat-treated sarcoma serum or protease-digested sarcoma serum. 3. 3. Transmission in these groups was significantly slower than in the group where cells were administered in intact sarcoma serum, demonstrating that the tumor promoting factors in the serum were heat-sensitive proteins. 4. 4. Normal hemocytes administered in sarcoma serum caused mortality but not sarcoma transmission, suggesting the presence of cytotoxic factors in sarcoma serum.
Sokolova, Inna M - One of the best experts on this subject based on the ideXlab platform.
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Effect of salinity and burial on succinate dehydrogenase and adenosinetriphosphatase in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the effect of different salinity regime on the burial activity of Mya arenaria, as well as the combined effect of osmotic stress and repeated burrowing on the succinate dehydrogenase and ATPase activity in foot muscle of Mya arenaria
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Effect of salinity and burial on metabolites in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the concentration on different amino acids and short chain organic acids in the whole body tissue of Mya arenaria
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Effect of salinity and burial on proteasomal activity in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the trypsin- and chymotrypsin-like proteasomal and lysosomal activity in gill tissue and digestive gland of Mya arenaria
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Effect of salinity stress and burial on Lucine Amino Peptidase in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the activity leucine aminopeptidase in gill tissue and digestive gland of Mya arenaria
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Effect of salinity on burrowing behavior of soft shell clams Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Sokolova, Inna MAbstract:Salinity changes in coastal zones is a frequent phenomena and coastal soft bottom organisms withstand these changes in a daily basis. This fluctuation in salinity can affect the ecological functions (like, bioturbation) of many organisms (bivalves, worms, polychaetes). In this dataset we present the effect of three different salinity regimes (normal: 15 psu, low: 5 psu and fluctuating: daily salinity cycles between 5 and 15 psu) on the burrowing capability (average burial time, number of times the animal can burry before exhaustion) of soft shell clams, Mya arenaria
Haider Fouzia - One of the best experts on this subject based on the ideXlab platform.
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Effect of salinity and burial on succinate dehydrogenase and adenosinetriphosphatase in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the effect of different salinity regime on the burial activity of Mya arenaria, as well as the combined effect of osmotic stress and repeated burrowing on the succinate dehydrogenase and ATPase activity in foot muscle of Mya arenaria
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Effect of salinity and burial on metabolites in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the concentration on different amino acids and short chain organic acids in the whole body tissue of Mya arenaria
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Effect of salinity and burial on proteasomal activity in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the trypsin- and chymotrypsin-like proteasomal and lysosomal activity in gill tissue and digestive gland of Mya arenaria
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Effect of salinity stress and burial on Lucine Amino Peptidase in Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Timm Stefan, Hagemann Martin, Blanco-rayon Esther, Marigomez Ionan, Izagirre Urtzi, Sokolova, Inna MAbstract:Bioturbators (such as bivalves, worms, polychaetes), living in a coastal area, experiences frequent changes in salinity. They are often exposed to mechanical disturbances (like wave, currents, storms) forcing them to bury deeper into the sediment to get a better foothold. In nature, these stressors often occurs simultaneously. Osmotic stress negatively affects the burial activity and the physiological performances of soft shell clam, Mya arenaria; however, the mechanism behind this is still unknown. In this dataset we present the combined effect of osmotic stress and repeated burrowing on the activity leucine aminopeptidase in gill tissue and digestive gland of Mya arenaria
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Effect of salinity on burrowing behavior of soft shell clams Mya arenaria
PANGAEA, 2018Co-Authors: Haider Fouzia, Sokolov Eugene, Sokolova, Inna MAbstract:Salinity changes in coastal zones is a frequent phenomena and coastal soft bottom organisms withstand these changes in a daily basis. This fluctuation in salinity can affect the ecological functions (like, bioturbation) of many organisms (bivalves, worms, polychaetes). In this dataset we present the effect of three different salinity regimes (normal: 15 psu, low: 5 psu and fluctuating: daily salinity cycles between 5 and 15 psu) on the burrowing capability (average burial time, number of times the animal can burry before exhaustion) of soft shell clams, Mya arenaria
P Brousseau - One of the best experts on this subject based on the ideXlab platform.
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effects of in vivo exposure of Mya arenaria to organic and inorganic mercury on phagocytic activity of hemocytes
Toxicology, 2001Co-Authors: Michel Fournier, J Pellerin, Y Clermont, Y Morin, P BrousseauAbstract:Abstract Marine bivalves are aquatic invertebrate organisms which can be used as bioindicators in environmental monitoring. In vivo effects of mercuric chloride (HgCl2) and methylmercury (CH3HgCl) on phagocytic function of Mya arenaria hemocytes were evaluated in this study. Clams were exposed to single metal in water for up to 28 days at concentrations ranging from 10−9 to 10−5 M. Phagocytic activity of hemocytes was determined by uptake of fluorescent microspheres and flow cytometry. All clams exposed to 10−5 M HgCl2 died by day 7 of exposure. The viability of hemocytes was decreased only in clams exposed to 10−6 M HgCl2 for 28 days. A significant decrease in phagocytic activity of hemocytes was observed in clams exposed to 10−6 M of HgCl2 for 28 days. A similar pattern was observed with CH3HgCl, but at an earlier time. Chemical analysis performed on the tissues of the animals clearly show a greater uptake of the organic form of mercury by clams. Furthermore, a clear correlation was established between body burden of mercury and effects on phagocytic activity of hemocytes. Overall, the results of this study show that both speciations of mercury inhibited phagocytic function of Mya arenaria hemocytes following in vivo exposures.
Inna M Sokolova - One of the best experts on this subject based on the ideXlab platform.
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effects of mechanical disturbance and salinity stress on bioenergetics and burrowing behavior of the soft shell clam Mya arenaria
The Journal of Experimental Biology, 2018Co-Authors: Fouzia Haider, Eugene P Sokolov, Inna M SokolovaAbstract:ABSTRACT Bioturbation of sediments by burrowing organisms plays a key role in the functioning of coastal ecosystems. Burrowing is considered an energetically expensive activity, yet the energy costs of burrowing and the potential impacts of multiple stressors (such as salinity stress and wave action) on bioenergetics and burrowing performance of marine bioturbators are not well understood. We investigated the effects of mechanical disturbance and salinity stress on the burrowing behavior, aerobic capacity and energy expense of digging in a common marine bioturbator, the soft-shell clam Mya arenaria from the Baltic Sea (control salinity 15). Mya arenaria showed large individual variability in the burrowing efficiency, with an average of ∼7% of the body energy reserves used per burial. Clams with higher mitochondrial capacity and lower energy expenditure per burial showed higher endurance. Acclimation for 3–4 weeks to low (5) or fluctuating (5–15) salinity reduced the burrowing speed and the number of times the clams can rebury but did not affect the mitochondrial capacity of the whole body or the gill. Acclimation to the fluctuating salinity shifted the predominant fuel use for burrowing from proteins to lipids. Our data indicate that the reduced burrowing performance of clams under the salinity stress is not due to the limitations of energy availability or aerobic capacity but must involve other mechanisms (such as impaired muscle performance). The reduction in the burrowing capacity of clams due to salinity stress may have important implications for survival, activity and ecological functions of the clams in shallow coastal ecosystems.
